Home / 12,121.60-18,197.52-8,855.68

Finding the Fourth Proportional to 12,121.60, 18,197.52 and 8,855.68

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Solution

The fourth proportional to 12,121.60, 18,197.52 and 8,855.68 is: 13,294.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.60 : 18,197.52 = 8,855.68 : x
  2. Step 2: Convert to fraction form
    12,121.60/18,197.52 = 8,855.68/x
  3. Step 3: Cross multiply
    12,121.60x = 18,197.52 × 8,855.68
  4. Step 4: Simplify right side
    12,121.60x = 161,151,413.91
  5. Step 5: Solve for x
    x = 161,151,413.91/12,121.60
  6. Step 6: Final answer
    x = 13,294.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.